fix for ipkg 0.99.15

Index: pkg_hash.c===================================================================RCS file: /cvs/familiar/dist/ipkg/C/pkg_hash.c,vretrieving revision 1.71diff -u -r1.71 pkg_hash.c--- pkg_hash.c  29 Jul 2005 20:19:39 -0000      1.71+++ pkg_hash.c  2 Sep 2005 12:58:09 -0000@@ -216,7 +216,8 @@                    pkg_t *maybe = vec->pkgs[i];                    ipkg_message(conf, IPKG_DEBUG, "  %s arch=%s arch_priority=%d  \n",                                 maybe->name, maybe->architecture, maybe->arch_priority);-                   if (maybe->arch_priority > 0)  {+                   if ((maybe->arch_priority > 0)+                       && ((constraint_fcn == NULL) || constraint_fcn(maybe, cdata))) {                         max_count++;                         abstract_pkg_vec_insert(matching_apkgs, maybe->parent);                         pkg_vec_insert(matching_pkgs, maybe);